Poppy-leaf extract-derived biomolecules adsorption on the rGO-nanoplatforms and application as smart self-healing material for epoxy coating

Nowadays, low-dimensional materials have been utilized as potential materials for designing smart com-posite coatings. Not only the coating's barrier function but also its self-healing ability can be improved via the inclusion of nano-particles. Herein, the graphene oxide (GO) nanosheets are firstly functionalized by Poppy-leaf extract (MGO) and then modified with Zn (II) ions. Thereupon, the Zn@MGOs are incorporated into the epoxy coating (EC).First, Zn@MGOs were synthesized and then characterized by Raman, XRD, and FT-IR techniques. Second, the anti-corrosion impacts of Zn@MGOs in 3.5% NaCl media and after inclusion into the epoxy coating (EC) were investigated. The reason for applying the solution phase studies was to investigate the anti-corrosion behavior of the designed nano-hybrid in a neutral salty solution. In the coating phase, electrochemical studies were done on the scratched and intact coatings to investigate the self-healing behavior and barrier properties of the designed nano-composites. Also, other experiments including salt spray and cathodic delamination tests were carried out to further study the protection function of the designed composites. Outcomes from the EIS and polarization tests proved that the Zn@MGO could enhance the metal resistance against corrosion via a mixed-type inhibition mechanism in the solution phase. Besides, the EIS studies in the coating phase clarified that the epoxy film self-healing action and barrier function were simultaneously improved in the presence of the Zn@MGO.(c) 2022 Elsevier B.V. All rights reserved.

Automated summary

Nowadays, low-dimensional materials have gained attention as potential candidates for designing smart composite coatings. The incorporation of nano-particles, such as graphene oxide functionalized with poppy-leaf extract and modified with zinc ions, can not only improve the coating's barrier function but also enhance its self-healing ability. Experimental studies including characterization, corrosion tests in solution phase, and electrochemical studies on the coated materials have demonstrated the improved corrosion resistance and self-healing behavior of the designed nano-composites.